diff options
| -rw-r--r-- | ports/esp32/boards/ESP32_GENERIC_C2/mpconfigboard.cmake | 2 | ||||
| -rw-r--r-- | ports/esp32/boards/sdkconfig.free_ram | 44 |
2 files changed, 46 insertions, 0 deletions
diff --git a/ports/esp32/boards/ESP32_GENERIC_C2/mpconfigboard.cmake b/ports/esp32/boards/ESP32_GENERIC_C2/mpconfigboard.cmake index e9d498995..d935c22b8 100644 --- a/ports/esp32/boards/ESP32_GENERIC_C2/mpconfigboard.cmake +++ b/ports/esp32/boards/ESP32_GENERIC_C2/mpconfigboard.cmake @@ -4,4 +4,6 @@ set(SDKCONFIG_DEFAULTS boards/sdkconfig.base boards/sdkconfig.ble boards/sdkconfig.c2 + # C2 has unusably low free RAM without these optimisations + boards/sdkconfig.free_ram ) diff --git a/ports/esp32/boards/sdkconfig.free_ram b/ports/esp32/boards/sdkconfig.free_ram new file mode 100644 index 000000000..36c6455e3 --- /dev/null +++ b/ports/esp32/boards/sdkconfig.free_ram @@ -0,0 +1,44 @@ +# This is a collection of sdkconfig settings that frees RAM at runtime, +# at the expense of performance. +# +# Not all options will work on all SoC families, but adding this sdkconfig +# set to a board should increase the free memory. +# +# - Many options free IRAM, which on most ESP32 families leads to +# free DRAM at runtime (original ESP32 and S2 may not). +# - The other options reduce runtime DRAM usage from the heap. +# +# IMPORTANT: If you enable these config settings on a custom build then you may +# encounter bugs or crashes. If you choose to open a MicroPython bug report then +# please mention these config settings! + +# Place functions in flash whenever possible to free IRAM +CONFIG_RINGBUF_PLACE_FUNCTIONS_INTO_FLASH=y +CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y +CONFIG_HEAP_PLACE_FUNCTION_INTO_FLASH=y + +# Use the SPI flash functions in ROM (when available). This may limit flash chip +# support and cause issues with some flash chips. Each SoC family has different +# set of chip support baked into ROM. +CONFIG_SPI_FLASH_ROM_IMPL=y + +# Run the Bluetooth controller from flash not IRAM +CONFIG_BT_CTRL_RUN_IN_FLASH_ONLY=y + +# lwIP adjustments to limit runtime memory usage (at expense of performance, and/or +# a reduction in number of active connections). +CONFIG_LWIP_TCPIP_RECVMBOX_SIZE=16 +CONFIG_LWIP_MAX_SOCKETS=6 +CONFIG_LWIP_MAX_ACTIVE_TCP=8 + +# These lwIP values are recommended to scale relative to the Wi-Fi buffer numbers +CONFIG_LWIP_TCP_WND_DEFAULT=3072 +CONFIG_LWIP_TCP_SND_BUF_DEFAULT=3072 + +# Wi-Fi adjustments to reduce peak runtime memory usage, at expense of peak +# performance +CONFIG_ESP_WIFI_STATIC_RX_BUFFER_NUM=8 +CONFIG_ESP_WIFI_DYNAMIC_RX_BUFFER_NUM=12 +CONFIG_ESP_WIFI_DYNAMIC_TX_BUFFER_NUM=12 +CONFIG_ESP_WIFI_RX_MGMT_BUF_NUM_DEF=2 +CONFIG_ESP_WIFI_RX_BA_WIN=12 |